of the department of pediatrics at valley medical center is surprised, at the last moment governor brown anded a religious exemption. parents with religious beliefs ruling out vaccinations don't have to jump through this hoop. >> perhaps with this new exception added to it, the bill won't be as effective. >> reporter: even so this new mom thinks it's a good idea. >> your relationship with your pediatrician is a partnership. >> reporter: dr. kim mulvihill, cbs 5, healthwatch. >>> from stanford university researchers say a virus may be able to stop an aggressive form of breast cancer. the research involved adding a tumor fighting protein to a harmless smallpox-type virus and giving it to mice with triple negative breast cancer. future tests are planned on humans. about 20% of breast cancer cases in the u.s. fall under the triple negative category. >>> a kaiser permanente study says the human papilloma virus vaccine is generally safe but researchers say the hpv vaccine has some side effects for some users, including fainting on the day of the shot and skin infections two weeks afterward. th